TLS Online TPP Program

#Question id: 15361


The chemical benzo(a)pyrene, found in cigarette smoke as well as in coal tar, undergoes metabolic activation in the lungs to form a potent mutagen that mainly, causes conversion of guanine (G) to thymine (T) bases, a transversion mutation, When applied to cultured bronchial epithelial cells, activated benzo(a)pyrene induces many mutations, including inactivating mutations of the p53 gene, at codon number______

#Unit 4. Cell Communication and Cell Signaling
  1. 178, 245, and 272 
  2. 175, 248, and 273 
  3. 174, 248, and 273
  4. 175, 243, and 274 
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TLS Online TPP Program

#Question id: 888

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following statements about the protein folding is incorrect?

TLS Online TPP Program

#Question id: 26440

#Unit 3. Fundamental Processes

Choose the correct statement 
a. Long patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, and APE1 
b. Long patch repair system is accomplished by Lig3, FEN1, Pol ξ β ,APE1 & lyase action
c. Short patch repair system is accomplished by Lig3, FEN1, Pol  ξ β,APE1 & lyase action
d. Short patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, , and APE1

TLS Online TPP Program

#Question id: 23709

#Unit 13. Methods in Biology

Which of the following modifications is least likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis?

TLS Online TPP Program

#Question id: 5286

#Unit 8. Inheritance Biology

An Hfr strain with genotype A B C D (each gene for amino acid synthesis )and that transfers the A gene very late was mated with recipient strain with genotype a b c d. After mating for several hours, the mixture was diluted and plated on minimal media with four different supplements having various number of colony

Media supplement with amino acid  

                 Colony                                          number

                  A+C                                                 500

                  C+D                                                  50

                     B                                                    10

                     A                                                   250

What is order of gene

TLS Online TPP Program

#Question id: 15284

#Unit 5. Developmental Biology

Morphogens can be:
1. Transcription factors
2. Paracrine factors
3. Cell adhesion factors
4. Non-diffusable molecules